Technical Paper: FAQs on UV-Induced Degradation of n-TOPCon PV Cells

UV-induced degradation can quietly erode up to 16% of your module’s output in just a few years — undermining warranties, damaging investor confidence and cutting into your bottom line. UL Solutions experts’ concise answers to FAQs arm you with information regarding:

• Spotting and addressing UVID before it impacts yields
• Delivering independent IE-verified data to secure financing
• Negotiating power rating derates and coverage terms
• Optimizing your testing, sampling and maintenance plans

Key takeaways

• UVID demystified – What it is, why it happens and which technologies are vulnerable
• Quantified impact – Real-world degradation rates and their financial implications
• Testing best practices – Sample size guidelines, UV dosages and load condition protocols to enable true performance loss to be revealed
• Mitigation and warranty strategies – Power rating derates, robust sampling plans and contract level recommendations
• IE-level checklist – What leading tax equity investors expect in hybrid finance and tax-credit transfer deals